From 01d66fbd5b18ac9f01a6a2ae1278189d19208ad5 Mon Sep 17 00:00:00 2001 From: Bob Copeland Date: Thu, 25 Oct 2018 17:36:34 -0400 Subject: [PATCH] {nl,mac}80211: add dot11MeshConnectedToMeshGate to meshconf When userspace is controlling mesh routing, it may have better knowledge about whether a mesh STA is connected to a mesh gate than the kernel mpath table. Add dot11MeshConnectedToMeshGate to the mesh config so that such applications can explicitly signal that a mesh STA is connected to a gate, which will then be advertised in the beacon. Signed-off-by: Bob Copeland Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 5 +++++ include/uapi/linux/nl80211.h | 8 +++++++- net/mac80211/cfg.c | 3 +++ net/mac80211/debugfs_netdev.c | 3 +++ net/mac80211/mesh.c | 3 ++- net/wireless/nl80211.c | 8 +++++++- 6 files changed, 27 insertions(+), 3 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 24d2db8e082d..16d595b93ba3 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1562,6 +1562,10 @@ struct bss_parameters { * @plink_timeout: If no tx activity is seen from a STA we've established * peering with for longer than this time (in seconds), then remove it * from the STA's list of peers. Default is 30 minutes. + * @dot11MeshConnectedToMeshGate: if set to true, advertise that this STA is + * connected to a mesh gate in mesh formation info. If false, the + * value in mesh formation is determined by the presence of root paths + * in the mesh path table */ struct mesh_config { u16 dot11MeshRetryTimeout; @@ -1581,6 +1585,7 @@ struct mesh_config { u16 dot11MeshHWMPperrMinInterval; u16 dot11MeshHWMPnetDiameterTraversalTime; u8 dot11MeshHWMPRootMode; + bool dot11MeshConnectedToMeshGate; u16 dot11MeshHWMPRannInterval; bool dot11MeshGateAnnouncementProtocol; bool dot11MeshForwarding; diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index ff6005edf32f..51bd85b7d839 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -3117,7 +3117,7 @@ enum nl80211_sta_bss_param { * some packets with an FCS error due to TA corruption. Hence this counter * might not be fully accurate. * @NL80211_STA_INFO_CONNECTED_TO_GATE: set to true if STA has a path to a - * mesh gate + * mesh gate (u8, 0 or 1) * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute */ @@ -3940,6 +3940,11 @@ enum nl80211_mesh_power_mode { * remove it from the STA's list of peers. You may set this to 0 to disable * the removal of the STA. Default is 30 minutes. * + * @NL80211_MESHCONF_CONNECTED_TO_GATE: If set to true then this mesh STA + * will advertise that it is connected to a gate in the mesh formation + * field. If left unset then the mesh formation field will only + * advertise such if there is an active root mesh path. + * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use */ enum nl80211_meshconf_params { @@ -3972,6 +3977,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_POWER_MODE, NL80211_MESHCONF_AWAKE_WINDOW, NL80211_MESHCONF_PLINK_TIMEOUT, + NL80211_MESHCONF_CONNECTED_TO_GATE, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 2fccccfbbf4d..cf8f946ae724 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2028,6 +2028,9 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy, nconf->dot11MeshAwakeWindowDuration; if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) conf->plink_timeout = nconf->plink_timeout; + if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) + conf->dot11MeshConnectedToMeshGate = + nconf->dot11MeshConnectedToMeshGate; ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); return 0; } diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index c813207bb123..cff0fb3578c9 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -641,6 +641,8 @@ IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); +IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, + u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); #endif #define DEBUGFS_ADD_MODE(name, mode) \ @@ -762,6 +764,7 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata) MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); MESHPARAMS_ADD(power_mode); MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); + MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); #undef MESHPARAMS_ADD } #endif diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 19205c821dee..4869280a6413 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -255,7 +255,8 @@ int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata, u8 *pos, neighbors; u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie); bool is_connected_to_gate = ifmsh->num_gates > 0 || - ifmsh->mshcfg.dot11MeshGateAnnouncementProtocol; + ifmsh->mshcfg.dot11MeshGateAnnouncementProtocol || + ifmsh->mshcfg.dot11MeshConnectedToMeshGate; if (skb_tailroom(skb) < 2 + meshconf_len) return -ENOMEM; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f231059242cc..d5f0ffd076b2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6275,7 +6275,9 @@ static int nl80211_get_mesh_config(struct sk_buff *skb, nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, cur_params.dot11MeshAwakeWindowDuration) || nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, - cur_params.plink_timeout)) + cur_params.plink_timeout) || + nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE, + cur_params.dot11MeshConnectedToMeshGate)) goto nla_put_failure; nla_nest_end(msg, pinfoattr); genlmsg_end(msg, hdr); @@ -6332,6 +6334,7 @@ nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { NL80211_MESH_POWER_MAX), [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, + [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1), }; static const struct nla_policy @@ -6443,6 +6446,9 @@ do { \ FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask, NL80211_MESHCONF_RSSI_THRESHOLD, nla_get_s32); + FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask, + NL80211_MESHCONF_CONNECTED_TO_GATE, + nla_get_u8); /* * Check HT operation mode based on * IEEE 802.11-2016 9.4.2.57 HT Operation element. -- 2.39.5